CVE-2026-85454

MEDIUMPre-NVD 6.16.1—
EchelonGraph scoreHIGH confidence

Score 6.1 from GitHub Security Advisory published 2026-09-04. a secondary CVSS source baseline 6.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
6.1EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.1Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

MOOS core-moos through 10.4.0 contains a buffer overflow vulnerability in CMOOSSerialPort::GetTelegram() that writes a NUL terminator one byte past the serial telegram stack buffer. Attackers controlling the serial line can send a full-length telegram to trigger the off-by-one write, corrupting the stack and potentially enabling code execution.

CVSS v3
6.1
EG Score
6.1(high)
EG Risk
28(Track)
EG Risk 28/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity61% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
13%
KEV
Not listed

Published

September 3, 2026

Last Modified

September 8, 2026

Advisory Details (5)

Auto-updated Sep 3, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr, github_commit.
generic

MOOS core-moos through 10.4.0 Off-by-One Buffer Overflow in Serial Telegram Handling | Advisories | VulnCheck

https://www.vulncheck.com/advisories/moos-core-moos-through-10.4.0-off-by-one-buffer-overflow-in-serial-telegram-handling
generic

core-moos/Core/libMOOS/Utils/MOOSSerialPort.cpp at ec9c77c68fcbdef8f5e4c60fe243acd223433f0c · themoos/core-moos · GitHub

https://github.com/themoos/core-moos/blob/ec9c77c68fcbdef8f5e4c60fe243acd223433f0c/Core/libMOOS/Utils/MOOSSerialPort.cpp#L595
generic

GitHub - themoos/core-moos: A very light weight, easy to use middleware. You will need core-moos above all other components · GitHub

https://github.com/themoos/core-moos
github_commit

commit befb04df2039 (themoos/core-moos)

Fix landed in themoos/core-moos commit befb04df2039 — awaiting tagged release

https://github.com/themoos/core-moos/commit/befb04df2039d0080715ea35f56268092db4ec0f
github_pr

Fix off by one in the serial telegram buffers and recover a full one

Upstream fix in progress (PR #73 · themoos/core-moos, state=open)

https://github.com/themoos/core-moos/pull/73

Vendor Advisories for CVE-2026-85454(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 19× in last 7d / 45× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 01:57 UTCEG score recompute
  2. 2026-09-19 01:57 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 01:42 UTCEG score recompute
  5. 2026-09-18 01:42 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-17 01:26 UTCEG score recompute
  8. 2026-09-17 01:26 UTCGHSA enrichment
  9. 2026-09-16 14:09 UTCEPSS rescore
  10. 2026-09-16 05:15 UTCEPSS rescore
  11. 2026-09-16 01:10 UTCEG score recompute
  12. 2026-09-16 01:10 UTCGHSA enrichment
  13. 2026-09-15 03:12 UTCEPSS rescore
  14. 2026-09-15 03:12 UTCEPSS rescore
  15. 2026-09-15 00:54 UTCGHSA enrichment
  16. 2026-09-14 00:38 UTCEG score recompute
  17. 2026-09-14 00:38 UTCGHSA enrichment
  18. 2026-09-13 00:23 UTCEG score recompute
  19. 2026-09-13 00:23 UTCGHSA enrichment
  20. 2026-09-12 00:07 UTCEG score recompute
  21. 2026-09-12 00:07 UTCGHSA enrichment
  22. 2026-09-11 14:53 UTCEPSS rescore
  23. 2026-09-11 14:53 UTCEPSS rescore
  24. 2026-09-10 23:51 UTCEG score recompute
  25. 2026-09-10 23:51 UTCGHSA enrichment
Show 20 more
  1. 2026-09-09 23:25 UTCEG score recompute
  2. 2026-09-09 23:25 UTCGHSA enrichment
  3. 2026-09-08 22:01 UTCEPSS rescore
  4. 2026-09-08 20:19 UTCEG score recompute
  5. 2026-09-08 20:19 UTCGHSA enrichment
  6. 2026-09-08 14:19 UTCEG score recompute
  7. 2026-09-08 14:19 UTCGHSA enrichment
  8. 2026-09-08 00:33 UTCEG score recompute
  9. 2026-09-08 00:33 UTCGHSA enrichment
  10. 2026-09-07 00:17 UTCEG score recompute
  11. 2026-09-07 00:16 UTCGHSA enrichment
  12. 2026-09-06 13:48 UTCEPSS rescore
  13. 2026-09-05 23:58 UTCEG score recompute
  14. 2026-09-05 23:58 UTCGHSA enrichment
  15. 2026-09-05 15:31 UTCEPSS rescore
  16. 2026-09-04 23:42 UTCEG score recompute
  17. 2026-09-04 23:42 UTCGHSA enrichment
  18. 2026-09-03 23:27 UTCEG score recompute
  19. 2026-09-03 22:43 UTCEG score recompute
  20. 2026-09-03 22:43 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-85454?
CVE-2026-85454 is a medium vulnerability published on September 3, 2026. MOOS core-moos through 10.4.0 contains a buffer overflow vulnerability in CMOOSSerialPort::GetTelegram() that writes a NUL terminator one byte past the serial telegram stack buffer. Attackers controlling the serial line can send a full-length telegram to trigger the off-by-one write, corrupting the…
When was CVE-2026-85454 disclosed?
CVE-2026-85454 was first published in the National Vulnerability Database on September 3, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85454 actively exploited?
CVE-2026-85454 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 87.4% of all scored CVEs.
What is the CVSS score of CVE-2026-85454?
CVE-2026-85454 has a CVSS v3 base score of 6.1 (NVD).
How do I remediate CVE-2026-85454?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85454, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-85454

Explore →

Is Your Infrastructure Affected by CVE-2026-85454?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs